I have a Sony/Erisson i800-series phone that can no longer be mounted in Ubuntu, since several releases ago. When the drive is removed from the phone and put into a separate device, it can be mounted, and Windows and Macs can also mount the drive through the phone, so I am sure that it's not a problem with the phone.
Ubuntu Koala can mount various sticks and external drives that I have, so it's not a problem with mounting USB devices in general.
I have a Sony/Erisson i800-series phone that can no longer be mounted in Ubuntu, since several releases ago. When the drive is removed from the phone and put into a separate device, it can be mounted, and Windows and Macs can also mount the drive through the phone, so I am sure that it's not a problem with the phone.
Ubuntu Koala can mount various sticks and external drives that I have, so it's not a problem with mounting USB devices in general.